Water Temperature of the Tuolumne River in Groveland, CA

Current Water Temperature

49.5°F

Measurement Time: Monday, March 30, 2026, 7:15 AM PDT

Temperature Locations

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Local Points of Interest

Stanislaus National Forest; Colfax Spring, CA; Mather, CA; Harden Flat, CA

Tuolumne River

Station Name: TUOLUMNE R BL EARLY INTAKE NR MATHER CA
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 2,369 feet

Nearest Address:
Cherry Lake Rd
Groveland, CA 95321
Tuolumne County

GPS Coordinates: 37.8815908, -119.9701824

Nearby Water Temperatures

Tuolumne River, Groveland, CA (1.3 mi)
Cherry Creek, Groveland, CA (6.6 mi)
Tuolumne River, Groveland, CA (10.1 mi)
Tuolumne River, Groveland, CA (17.1 mi)
Merced River, Yosemite Valley, CA (24.7 mi)
Middle Fork San Joaquin River, Mammoth Lakes, CA (51.3 mi)
Deadman Creek, Mammoth Lakes, CA (57 mi)
Hot Creek, Mammoth Lakes, CA (62.8 mi)
Hot Creek, Mammoth Lakes, CA (63.4 mi)
San Joaquin River, Friant, CA (63.4 mi)
Hot Creek, Mammoth Lakes, CA (64.6 mi)
Trout Creek, South Lake Tahoe, CA (71.7 mi)
Upper Truckee River, South Lake Tahoe, CA (71.9 mi)
General Creek, Tahoma, CA (81.3 mi)
South Fork American River, Rescue, CA (82.9 mi)

Weather for Groveland, California

Current Weather

73.1°F
Sunny
Sunny
75.3°F
75.3°F
38%
SW 8.5 mph
10.9 mph
73.1°F
46.8°F
0 in
0%
6 mi
1013 mbar
4.9

Five Day Weather Forecast

Sunny
Mon
H: 74°F
L: 54°F
Moderate rain
Tue
H: 57°F
L: 47°F
Cloudy
Wed
H: 54°F
L: 46°F
Moderate rain
Thu
H: 55°F
L: 42°F
Sunny
Fri
H: 63°F
L: 41°F

Air Quality

AQI: 1 - Good
PM2.5: 8.15 μg/m3
PM10: 10.35 μg/m3
Carbon Monoxide: 238.85 μg/m3
Nitrogen Dioxide: 12.35 μg/m3
Sulphur Dioxide: 2.65 μg/m3
Ozone: 74 μg/m3

Astronomical

Sunrise: 6:48 AM
Sun Transit: 1:04 PM
Sunset: 7:21 PM
Daylight: 12 hrs 33 mins
Moonrise: 5:17 PM
Moon Transit: 11:44 PM
Moonset: 5:36 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 93.0%

Best Times for Fishing or Hunting

Major Periods

6:45 AM - 9:15 AM
12:00 AM - 12:00 AM

Minor Periods

4:47 PM - 6:17 PM
5:06 AM - 6:36 AM

Action Rating: 4 out of 5

Monday, March 30, 2026

Weather Forecast

Sunny
73.9°F
54°F
63.4°F
40%
0 in
0%
0%
8.7 mph
1.2


Air Quality

AQI: 1 - Good
PM2.5: 5.91 μg/m3
PM10: 8.7 μg/m3
Carbon Monoxide: 162.21 μg/m3
Nitrogen Dioxide: 6.49 μg/m3
Sulphur Dioxide: 1.7 μg/m3
Ozone: 71.48 μg/m3

Astronomical

Sunrise: 6:48 AM
Sun Transit: 1:04 PM
Sunset: 7:21 PM
Daylight: 12 hrs 33 mins
Moonrise: 5:17 PM
Moon Transit: 11:44 PM
Moonset: 5:36 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 93.0%

Best Times for Fishing or Hunting

Major Periods

6:45 AM - 9:15 AM
12:00 AM - 12:00 AM

Minor Periods

4:47 PM - 6:17 PM
5:06 AM - 6:36 AM

Action Rating: 4 out of 5

Tuesday, March 31, 2026

Weather Forecast

Moderate rain
56.7°F
47.1°F
52.5°F
77%
0.45 in
84%
0%
4.3 mph
0.4


Air Quality

AQI: 1 - Good
PM2.5: 8.53 μg/m3
PM10: 12.03 μg/m3
Carbon Monoxide: 164.45 μg/m3
Nitrogen Dioxide: 6.05 μg/m3
Sulphur Dioxide: 2.21 μg/m3
Ozone: 84.32 μg/m3

Astronomical

Sunrise: 6:47 AM
Sun Transit: 1:03 PM
Sunset: 7:22 PM
Daylight: 12 hrs 35 mins
Moonrise: 6:21 PM
Moon Transit: 12:00 AM
Moonset: 6:00 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
7:28 AM - 9:58 AM

Minor Periods

5:51 PM - 7:21 PM
5:30 AM - 7:00 AM

Action Rating: 4 out of 5

Wednesday, April 1, 2026

Weather Forecast

Cloudy
53.6°F
46°F
49.6°F
82%
0 in
0%
0%
10.7 mph
1.5


Air Quality

AQI: 1 - Good
PM2.5: 11.08 μg/m3
PM10: 15.56 μg/m3
Carbon Monoxide: 139.69 μg/m3
Nitrogen Dioxide: 3.11 μg/m3
Sulphur Dioxide: 1.57 μg/m3
Ozone: 88.88 μg/m3

Astronomical

Sunrise: 6:45 AM
Sun Transit: 1:03 PM
Sunset: 7:23 PM
Daylight: 12 hrs 38 mins
Moonrise: 7:23 PM
Moon Transit: 12:26 AM
Moonset: 6:23 AM
Moon Phase: Full
Moon Illumination: 99.8%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
8:11 AM - 10:41 AM

Minor Periods

6:53 PM - 8:23 PM
5:53 AM - 7:23 AM

Action Rating: 4 out of 5

Thursday, April 2, 2026

Weather Forecast

Moderate rain
54.5°F
41.7°F
47.7°F
72%
0.26 in
84%
0%
9.6 mph
1.7


Air Quality

AQI: 1 - Good
PM2.5: 10.87 μg/m3
PM10: 16.89 μg/m3
Carbon Monoxide: 141.63 μg/m3
Nitrogen Dioxide: 7.4 μg/m3
Sulphur Dioxide: 2.51 μg/m3
Ozone: 68.92 μg/m3

Astronomical

Sunrise: 6:44 AM
Sun Transit: 1:03 PM
Sunset: 7:24 PM
Daylight: 12 hrs 40 mins
Moonrise: 8:26 PM
Moon Transit: 1:09 AM
Moonset: 6:46 AM
Moon Phase: Full
Moon Illumination: 99.5%

Best Times for Fishing or Hunting

Major Periods

12:39 AM - 3:09 AM
8:53 AM - 11:23 AM

Minor Periods

7:56 PM - 9:26 PM
6:16 AM - 7:46 AM

Action Rating: 4 out of 5

Friday, April 3, 2026

Weather Forecast

Sunny
62.5°F
41.3°F
51.4°F
45%
0 in
0%
0%
6.7 mph
1.7


Air Quality

AQI: 1 - Good
PM2.5: 4.02 μg/m3
PM10: 9.98 μg/m3
Carbon Monoxide: 171.08 μg/m3
Nitrogen Dioxide: 6.09 μg/m3
Sulphur Dioxide: 1.7 μg/m3
Ozone: 72.31 μg/m3

Astronomical

Sunrise: 6:42 AM
Sun Transit: 1:03 PM
Sunset: 7:25 PM
Daylight: 12 hrs 43 mins
Moonrise: 9:28 PM
Moon Transit: 1:52 AM
Moonset: 7:10 AM
Moon Phase: Full
Moon Illumination: 96.6%

Best Times for Fishing or Hunting

Major Periods

1:22 AM - 3:52 AM
9:37 AM - 12:07 AM

Minor Periods

8:58 PM - 10:28 PM
6:40 AM - 8:10 AM

Action Rating: 4 out of 5

The times presented here are based upon the solunar theory, which is the idea that the movements of fish and other animals are affected by the location of the sun and moon. The major periods are believed to be the times of the greatest animal activity and occur when the moon is directly overhead or underfoot (lunar transits). The minor periods also see increased activity and occur when the moon is rising or setting. The strongest activity occurs during full or new moons, and the weakest during quarter or three quarter moons. This is indicated by the Action Rating.

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